# Air Plan Approval; Vermont; Regional Haze State Implementation Plan for the Second Implementation Period
> **Rule** · Final rule. · Published 2025-11-18 · Effective 2025-12-18 · 90 FR 51527
## Document
- **Document number:** 2025-20141
- **Category:** air-emissions
- **Federal Register citation:** 90 FR 51527
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-11-18
- **Effective date:** 2025-12-18
- **State:** VT
- **EPA docket:** EPA-R01-OAR-2025-0142
## Abstract

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Vermont on July 1, 2024, as satisfying applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule for the program's second implementation period. Vermont's SIP submission addresses the requirement that states must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. The SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. This action is being taken in accordance with the Clean Air Act.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/11/18/2025-20141/air-plan-approval-vermont-regional-haze-state-implementation-plan-for-the-second-implementation)
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